Helix Proxy 9 is designed on a new architecture that facilitates greater extensibility and interoperability with third-party solutions. This chapter discusses the features that have been added to this version of Helix Universal Proxy.
Helix Universal Proxy now uses the RTSP protocol to transfer data from Helix Universal Server to its cache. Using RTSP to establish a cache acquisition connection (rather than the proprietary protocol MEI used in previous versions) removes the need for an organization to perform a special configuration of its firewall settings to work with Helix Universal Proxy. Additionally, since it's not HTTP caching it will not interfere with your system's web caching capability.
Helix Universal Proxy 9 offers customers significant enhancements to its pull splitting capabilities, including simplified port allocation, better access through fire walls, and enhanced gateway bandwidth utilization.
Helix Universal Proxy now uses the RTSP protocol to request live splitting
connections from Helix Universal Server. The proxy makes an RTSP control
channel connection destined for the server on port 554 to request live
broadcasts and to negotiate live packet transmission. This broadcast
distribution initiation method is enabled using LIST: BroadcastReceiver and
VAR: UseRTSPInitiate.
This version of Helix Universal Proxy has an auto negotiation feature for live
split broadcasts that first attempts UDP for live packet transmission and then
TCP (if UDP is unavailable). Refer to LIST: BroadcastReceiver and VAR: Protocol.
Working with Helix Universal Server 9, Helix Universal Proxy helps you
conserve bandwidth when splitting a live RealAudio or RealVideo broadcast.
With Surestream-Aware Splitting, this version of Helix Universal Proxy
typically proxies only the bit rates requested by the client rather than sending
multiple bit rate streams. Refer to LIST: BroadcastReceiver.
With Helix Universal Server 9, Helix Universal Proxy 9 offers several new media formats providing greater flexibility in the type of media you can deliver.
The Windows Media format can be streamed through this version of Helix Universal Proxy to Windows Media Player. Helix Universal Proxy proxies Windows Media format using Microsoft Media Services protocol (MMS).
Working with Helix Universal Server, this version of Helix Universal Proxy supports MPEG 1, MPEG 2, and MPEG 4.
Teamed with Helix Universal Server 9, this version of Helix Universal Proxy delivers RealMedia Variable Bit Rate (.rmvb) video format by proxy cache in addition to delivery by pass-through mode.
Custom logging is a more flexible system for generating reports. This type of logging is based on templates that define what information is captured, when and how often information is captured, and how it is delivered. You can create your own templates or use the default templates. For more information, see Chapter 3, "Custom Logging".
The redundant proxies feature enables you to add another level of redundancy to the delivery of your streaming media content. If an RTSP connection between RealOne Player and Helix Universal Proxy breaks, by default the RealOne Player attempts to reconnect to the same Helix Universal Proxy. However, in this version of Helix Universal Proxy, if you have identified an alternate proxy, RealOne Player attempts to connect to the alternate proxy instead. For more information see Chapter 4, "Redundant Proxies".
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